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JRM Vol.34 No.2 pp. 257-259
doi: 10.20965/jrm.2022.p0257
(2022)

Letter:

Environmental Response Sensors Produced Using Bilayer-Type Organic Semiconductors

Shunto Arai

The University of Tokyo
7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

Received:
September 5, 2021
Accepted:
September 14, 2021
Published:
April 20, 2022
Keywords:
chemical sensor, molecular bilayer, organic semiconductor, organic transistor, printed electronics
Abstract
Environmental Response Sensors Produced Using Bilayer-Type Organic Semiconductors

Ultra-thin semiconductors enhance the sensitivity of sensors

In this study, we developed environmental gas sensors based on bilayer-type organic semiconductors. The number of stacked molecular bilayers was controlled through a solution-based approach. In particular, single molecular bilayers (SMBs) were produced through a geometrical frustration method that can effectively suppress the multiple stacking of bilayers. The layer number-controlled films were utilized to form thin-film transistors (TFTs) to detect the moisture in the air. We revealed that the sensitivity was enhanced in the SMB-based TFTs compared with the TFTs with thicker active layers. These findings are expected to facilitate a new route for producing flexible and lightweight chemical sensors.

Cite this article as:
S. Arai, “Environmental Response Sensors Produced Using Bilayer-Type Organic Semiconductors,” J. Robot. Mechatron., Vol.34, No.2, pp. 257-259, 2022.
Data files:
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Last updated on Sep. 26, 2022